Astronomy and Astrophysics – Astrophysics – High Energy Astrophysical Phenomena
Scientific paper
2011-04-20
Prog. Theor. Phys. 125 (2011), 1255-1287
Astronomy and Astrophysics
Astrophysics
High Energy Astrophysical Phenomena
33 pages, 2 figures, to be published in Prog. Theor. Phys
Scientific paper
10.1143/PTP.125.1255
A truncated moment formalism for general relativistic radiation hydrodynamics, based on the Thorne's moment formalism, is derived. The fluid rest frame is chosen to be the fiducial frame for defining the radiation moments. Then, zeroth-, first-, and second-rank radiation moments are defined from the distribution function with a physically reasonable assumption for it in the optically thin and thick limits. The source terms are written, focusing specifically on the neutrino transfer and neglecting higher harmonic angular dependence of the reaction angle. Finally, basic equations for a truncated moment formalism for general relativistic radiation hydrodynamics in a closed covariant form are derived assuming a closure relation among the radiation stress tensor, energy density, and energy flux, and a variable Eddington factor, which works well.
Kiuchi Kenta
Sekiguchi Yu-ichiro
Shibata Masaru
Suwa Yudai
No associations
LandOfFree
Truncated Moment Formalism for Radiation Hydrodynamics in Numerical Relativity does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Truncated Moment Formalism for Radiation Hydrodynamics in Numerical Relativity, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Truncated Moment Formalism for Radiation Hydrodynamics in Numerical Relativity will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-432136